/* 全局背景渐变 */
body {
  margin: 0;
  color: #fff;
  font-family: Inter, Avenir, Helvetica, Arial, sans-serif;
  background-image: linear-gradient(to bottom, #020917, #101725);
}

/* 导航栏模糊效果 */
header {
  background-color: rgba(58, 42, 42, 0.7); /* 半透明深棕色背景 */
  backdrop-filter: blur(10px); /* 模糊效果 */
  color: white;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #553d3d;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.title {
  display: flex;
  flex-direction: column;
  font-weight: bold;
}

.title h1 {
  font-size: 1.8rem;
  margin: 0;
  color: white;
}

.title p {
  font-size: 1.2rem;
  color: #e74c3c;
  margin: 0;
}

.version {
  font-size: 0.8rem;
  color: #ccc;
  margin-left: 0.5rem;
}

.tab-btn {
  padding: 0.5rem 1rem;
  background: none;
  border: none;
  color: #ccc;
  cursor: pointer;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.tab-btn:hover {
  color: white;
}

.tab-btn.active {
  color: #e74c3c;
  font-weight: bold;
}
